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Latest news:

Recent earthquakes under Herdubreid volcano
Monday, Oct 12, 2015
A shallow earthquake swarm has been occurring 25 km NE of the Aksja caldera since Thursday. ... [more]
Wednesday, Jul 23, 2014
A large landslide occurred from the southern wall of the Askja caldera yesterday night. The slide caused a large flood wave in the Öskjuvatn lake that also swept into the famous Viti crater. ... [more]
 

Askja volcano

Stratovolcano 1516 m (4,974 ft)
Central Iceland, 65.03°N / -16.75°W
Current status: restless (2 out of 5)
Askja webcams / live data
Last update: 12 Oct 2015 (earthquake swarms)
Typical eruption style: explosive + effusive
Askja volcano eruptions: 1797(?), 1875, 1919, 1921, 1922, 1923, 1924(?), 1926, 1938, 1961
TimeMag. / DepthDistanceLocation
Fri, 5 Feb
Fri, 5 Feb 15:29 UTCM 1.1 / 1.1 km6 km5.5 km NE of Bárðarbunga
Fri, 5 Feb 14:47 UTCM 1.2 / 1.1 km5 km3.8 km NNE of Bárðarbunga
Fri, 5 Feb 12:50 UTCM 1.5 / 8.6 km28 km5.1 km NW of Herðubreiðarlindir
Fri, 5 Feb 12:36 UTCM 1.0 / 4.7 km3 km4.5 km W of Dreki
Fri, 5 Feb 11:45 UTCM 1.1 / 3.5 km3 km3.7 km WSW of Dreki
View all recent quakes
Askja is a large basaltic central volcano that forms the Dyngjufjöll massif. It is truncated by three overlapping calderas, the largest of which is 8 km wide and may have been produced primarily from subglacial ring-fracture eruptions rather than by subsidence.

Background:

A major rhyolitic explosive eruption from Dyngjufjöll about 10,000 years ago was in part associated with the formation of Askja caldera. Many postglacial eruptions also occurred along the ring-fracture. A major explosive eruption on the SE caldera margin in 1875 was one of Iceland's largest during historical time. It resulted in the formation of a smaller 4.5-km-wide caldera, now filled by Öskjuvatn lake, that truncates the rim of the larger central caldera. The 100-km-long Askja fissure swarm, which includes the Sveinagja graben, is also related to the Askja volcanic system, as are several small shield volcanoes such as Kollatadyngja. Twentieth-century eruptions at Askja have produced lava flows from vents located mostly near Öskjuvatn lake.

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Source: GVP, Smithsonian Institution

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